semi implemented and features implemented save checkpoint

docs/implplan-blocked/audits/csproj-standards/Zastava/StellaOps.Zastava.Agent/StellaOps.Zastava.Agent.md

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+# Audit - StellaOps.Zastava.Agent
+
+## Project
+- Path: `src/Zastava/StellaOps.Zastava.Agent/StellaOps.Zastava.Agent.csproj`
+- Module: `Zastava`
+- Kind: `Service`
+- SDK: `Microsoft.NET.Sdk`
+- TargetFramework: `net10.0`
+- Audit date (UTC): 2026-01-30
+
+## Coding Standards Findings
+- Status: FAIL
+- Nullable: enable
+- TreatWarningsAsErrors: explicit true
+- Deterministic: inherited true
+- 100-line rule violations: 9
+- Service locator usage (BuildServiceProvider/GetService): 0
+- Analyzer enforcement: missing repo-wide (see summary).
+
+### Details
+- 100-line files:
+  - `src/Zastava/StellaOps.Zastava.Agent/Worker/DockerEventHostedService.cs` (353 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Worker/RuntimeEventBuffer.cs` (304 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Docker/DockerSocketClient.cs` (296 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Worker/HealthCheckHostedService.cs` (276 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Docker/DockerEventModels.cs` (213 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Worker/RuntimeEventDispatchService.cs` (211 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Configuration/ZastavaAgentOptions.cs` (208 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Backend/RuntimeEventsClient.cs` (130 lines)
+  - `src/Zastava/StellaOps.Zastava.Agent/Worker/AgentServiceCollectionExtensions.cs` (112 lines)
+- Service locator matches:
+  - none
+
+### Fix Guidance
+- Split files over 100 lines into smaller types or partials.
+
+## Testing Fullness Findings
+- Status: FAIL
+- Expected layers: Unit
+- Detected test projects: none
+- Missing layers: Unit
+
+### Manual checks required
+- Observability contract tests for WebService/Worker.
+- Offline execution (tests must run without network access).
+
+### Fix Guidance
+- Add a unit test project named `<Project>.Tests` (or document exception).